CN214480335U

CN214480335U - Magnetic suspension device

Info

Publication number: CN214480335U
Application number: CN202120794519.7U
Authority: CN
Inventors: 许锋
Original assignee: Dongguan Hongming Electronic Technology Co ltd
Current assignee: Dongguan Hongming Electronic Technology Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-10-22
Anticipated expiration: 2031-04-19

Abstract

The utility model discloses a magnetic suspension device, which comprises a suspension body internally provided with a first magnet, a second magnet, a permanent magnet in a central radial shape and at least one pair of electromagnetic coils, wherein the permanent magnet and the second magnet are respectively provided with an upper surface and a lower surface with different magnetism, the magnetism of the upper surface of the permanent magnet is opposite to that of the lower surface of the first magnet, and the magnetism of the upper surface of the second magnet is the same as that of the lower surface of the first magnet, so that the suspension body is stably arranged at a set position along the Z-axis direction of the central position; the sensor detects the offset of the suspension body along the central position to the X-axis direction and the Y-axis direction and feeds the offset back to the control circuit, and the control circuit changes the current flowing into the electromagnetic coil so as to enable the suspension body to return to the set position.

Description

Magnetic suspension device

Technical Field

The utility model relates to a magnetic suspension device.

Background

Magnetic levitation is a technology that uses the principle that like magnets repel each other and the magnetic force balances gravity to suspend an object. At present, the application of the magnetic suspension technology is wider and wider, and some magnetic suspension devices manufactured by the magnetic suspension technology, such as magnetic suspension toys, magnetic suspension artware and magnetic suspension demonstration teaching aids, gradually appear on the market. The magnetic suspension device has a dynamic ornamental effect, and can intuitively reflect the running state of each fixed star of the solar system as teaching, so that the magnetic suspension device has a huge potential market.

The magnetic suspension products in the current market mainly have two defects, namely, the suspension height is not enough, and the head and the foot are large, so that the appearance is not harmonious. The main reason for the above problem is that the magnetic levitation device on the market currently uses a ring magnet. The annular permanent magnet can only adopt a ferrite magnet, so that the magnetic force is not strong. In order to improve the suspension height, a ring magnet with a larger circumference is often needed, the volume of the base is increased, and the integral uniformity and attractiveness are affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a magnetic suspension device, aims at solving the technical problem that current magnetic suspension product suspension height is not enough and whole outward appearance is asymmetric.

In order to achieve the above object, the utility model provides a magnetic suspension device, it includes:

a suspension body in which a first magnet having an upper surface and a lower surface of different magnetism is disposed;

the permanent magnets are in a central radial shape;

the second magnet is arranged at the central position of the permanent magnet;

at least a pair of electromagnetic coils symmetrically arranged at the vacant positions between the radial extension lines of the permanent magnet, and each electromagnetic coil is electrically connected with a control circuit and a sensor respectively;

the permanent magnet and the second magnet are respectively provided with an upper surface and a lower surface with different magnetism, the magnetism of the upper surface of the permanent magnet is opposite to that of the lower surface of the first magnet, and the magnetism of the upper surface of the second magnet is the same as that of the lower surface of the first magnet, so that the suspension body is stably arranged at a set position along the Z-axis direction of the central position;

the sensor detects the offset of the suspension body along the central position to the X-axis direction and the Y-axis direction and feeds the offset back to the control circuit, and the control circuit changes the current flowing into the electromagnetic coil so as to enable the suspension body to return to the set position.

Preferably, the permanent magnets are in a central radial shape with even number of symmetrical arrangement.

Preferably, the first magnet, the second magnet and the permanent magnet are made of neodymium iron boron.

Preferably, the end of the radial extension line of the permanent magnet is connected with a transition part magnet which extends in either direction or both directions perpendicular to the radial extension line.

Preferably, the permanent magnet is composed of four magnets in a central radial shape and the adapter part magnet.

Preferably, the number of the electromagnetic coils is four, and the four electromagnetic coils are symmetrically arranged at the center position of the permanent magnet.

Preferably, the control circuit comprises a sensor signal detection circuit, an amplifying circuit and a power amplifier circuit which are connected in sequence, and the sensor signal detection circuit is electrically connected to the sensor.

Preferably, the electromagnetic coil may be wound in a circular, square, triangular or other irregular shape at a gap between radial extensions of the permanent magnet.

Compared with the prior art, the utility model discloses an useful part lies in:

the utility model discloses a magnetic suspension device has abandoned traditional annular ferrite magnet mode, structurally adopts the brand-new combination of arranging, and the material that is different from annular magnet is chooseed for use to the magnet simultaneously, lets whole magnetic suspension device reasonable more, compact to the suspension height is higher, and control is more stable.

Drawings

Fig. 1 is a schematic structural view of a magnetic suspension device of the present invention;

FIG. 2 is a schematic view of an alternative embodiment of the base of FIG. 1;

fig. 3 is a schematic structural view of the magnetic levitation device of the present invention, in which the permanent magnets are eight radial magnets;

FIG. 4 is a schematic structural view of the magnetic suspension device according to the present invention, wherein the end of the permanent magnet radial extension line is connected to the magnet at the transfer part;

FIG. 5 is a schematic view of an alternative configuration of FIG. 4;

FIG. 6 is a schematic view of yet another alternative configuration of FIG. 4;

fig. 7 is a schematic diagram of the magnetic suspension device control circuit controlling the electromagnetic coil according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1, the magnetic suspension device comprises a suspension body with a first magnet 1 inside, wherein the first magnet 1 can be a circular ring-shaped or block-shaped neodymium iron boron magnet and is fixedly arranged at the bottom in the suspension body, and the suspension body is a hollow sphere; the magnetic suspension device is characterized by further comprising a base arranged at the right lower end of the suspension body, wherein the permanent magnets 2 in the base are in a central radial shape, the central position is reserved, the four neodymium iron boron permanent magnets 2 mutually extend outwards at 90 degrees, the reserved central position is fixedly provided with a second magnet 3 made of neodymium iron boron, four square electromagnetic coils 4 are symmetrically arranged at the vacant positions between the radial extension lines of the permanent magnets 2, each electromagnetic coil 4 is electrically connected with a control circuit and a sensor, and the base is integrally square. The sensors are preferably four Hall sensors and are respectively arranged on four electromagnetic coils 4 to detect the offset of the suspension body in the X-axis direction and the Y-axis direction.

The lower surface of the first magnet 1 is an N pole, the upper surface of the permanent magnet 2 is an S pole, the upper surface of the central second magnet 3 is an N pole, the permanent magnet 2 and the second magnet 3 both have upper surfaces and lower surfaces with different magnetism, the upper surface of the permanent magnet 2 is opposite to the lower surface of the first magnet 1 in magnetism, the upper surface of the second magnet 3 is the same as the lower surface of the first magnet 1 in magnetism, and as the permanent magnets 2 radially extend to the periphery and the upper surfaces are the S poles, a magnetic repulsion force acting upwards on the first magnet 1 with the N pole on the lower surface is arranged at a set position above a Z axis of the central position, so that the gravity of the suspension body is counteracted to enable the suspension body to suspend at the set position; the central position is provided with a second magnet 3 with the upper surface having the same polarity as the lower surface of the first magnet 1, the second magnet is in a round cake shape or a cylindrical shape, and forms a vertical upward repulsive force to the first magnet 1, so that the first magnet 1 is prevented from overturning or turning over under the action of the permanent magnet 2, and the suspension body is stably arranged at a set position along the axial direction of the central position Z. The sensor detects the offset of the suspension body along the central position to the X-axis direction and the Y-axis direction and feeds the offset back to the control circuit, and the control circuit changes the current flowing into the electromagnetic coil 4 to enable the suspension body to return to the set position.

Fig. 2 is a schematic view of an alternative base of fig. 1. The permanent magnet 2 in the base is four neodymium iron boron magnets which form an angle of 90 degrees with each other, the upper surface of the neodymium iron boron magnet is opposite to the lower surface of the first magnet 1 in polarity and extends towards four directions respectively, and the second magnet 3 with the upper surface of the neodymium iron boron magnet being the same as the lower surface of the first magnet 1 in magnetism is arranged at the central position, so that the suspension body is stably arranged at a set position along the Z axial direction of the central position, wherein the difference is that four triangular electromagnetic coils 4 are arranged at the vacant positions among the four radial extension lines of the permanent magnet 2, the occupied area of the base is reduced while the offset of the suspension body is controlled and adjusted, and the whole suspension body is more reasonable and compact.

Fig. 3 is a schematic structural diagram of the magnetic suspension device permanent magnet of the present invention, which is eight radial magnets, and the permanent magnet 2 is a central radial shape symmetrically arranged in an even number. Under the condition that the area of a base is not changed, the number of the permanent magnets 2 is increased, the magnetic force is increased, the suspension body can be suspended at a higher set position, the center of the permanent magnet 2 is provided with a second magnet 3 used for resisting the overturning or side turning of the first magnet 1, in order to adjust the offset of the suspension body in the X-axis direction and the Y-axis direction, eight triangular electromagnetic coils 4 are arranged at vacant positions among eight radial magnets and used for enabling the offset suspension body to return to the set position, in the embodiment, the control circuit is connected with four Hall sensors, and the four Hall sensors are arranged on the four electromagnetic coils 4 at intervals.

As shown in fig. 4 to 6, the end of the radial extension line of the permanent magnet 2 is connected with an adapter magnet extending in either direction or both directions perpendicular to the radial extension line. In this embodiment, the permanent magnet 2 is composed of four magnets having a radial center and an adapter magnet. As shown in fig. 4, the end of the radial extension line of the permanent magnet 2 is connected with a transition part magnet extending in one direction perpendicular to the radial extension line, four rectangular electromagnetic coils 4 are arranged in the vacant position, while fig. 5 shows that the permanent magnet has transition part magnets in two directions perpendicular to the extension line, and fig. 6 shows a change in shape of the electromagnetic coils 4 of fig. 5. At this moment, the polarity of the upper surface of the permanent magnet 2 is still opposite to that of the lower surface of the first magnet 1, the polarity of the upper surface of the second magnet 3 arranged at the middle position is the same as that of the lower surface of the first magnet 1, the area of the permanent magnet 2 on the base is increased, the magnetic force is increased, the height of the set position on the Z axis is improved, the electromagnetic coil 4 can be square, circular or in other shapes, the permanent magnet 2 can be arranged in each compartment separated by the permanent magnet 2 at intervals, the permanent magnet 2 can be attached to enhance the mechanical mechanism, redundant positions are left for arranging other components, and the compact effect is achieved.

As shown in fig. 7, the control circuit 6 includes a sensor signal detection circuit, an amplification circuit, and a power amplifier circuit, which are connected in sequence, and the sensor signal detection circuit is electrically connected to the sensor 5. The Hall sensors are respectively arranged on the electromagnetic coil 4 to detect the offset of the suspension body on the X axis and the Y axis so as to feed information back to the control circuit 6, a sensor signal detection circuit in the control circuit 6 receives the feedback information of the Hall sensors, the sensor signal detection circuit outputs corresponding voltage values to the amplification circuit according to the offset distance values of the X axis and the Y axis detected by the Hall sensors, the amplification circuit amplifies the voltage signals and then outputs the amplified voltage signals to the power amplification circuit, and the power amplification circuit drives the electromagnetic coil 4 to generate corresponding magnetic force so as to push or pull the offset suspension body to an original set position.

What just go up be the utility model discloses a part or preferred embodiment, no matter be characters or the drawing can not consequently restrict the utility model discloses the scope of protection, all with the utility model discloses a holistic thought down, utilize the equivalent structure transform that the contents of the description and the drawing do, or direct/indirect application all includes in other relevant technical field the utility model discloses the within range of protection.

Claims

1. A magnetic levitation apparatus, comprising:

the permanent magnets are in a central radial shape;

the second magnet is arranged at the central position of the permanent magnet;

2. Magnetic levitation apparatus as claimed in claim 1, wherein the permanent magnets are arranged in an even number of symmetrically arranged central radial shapes.

3. Magnetic levitation apparatus as claimed in claim 2, wherein the end of the radial extension line of the permanent magnet is connected with an adapter magnet extending perpendicular to the radial extension line in either direction or both directions.

4. A magnetic levitation apparatus as recited in claim 3, wherein the permanent magnet is composed of four radial magnets and the transition portion magnet.

5. The magnetic levitation device as recited in claim 4, wherein the number of the electromagnetic coils is four, and the four electromagnetic coils are symmetrically arranged with respect to the center of the permanent magnet.

6. The magnetic levitation device as recited in claim 1, wherein the first magnet, the second magnet and the permanent magnet are made of neodymium iron boron.

7. The magnetic levitation device as recited in claim 1, wherein the control circuit comprises a sensor signal detection circuit, an amplification circuit and a power amplifier circuit which are connected in sequence, and the sensor signal detection circuit is electrically connected to the sensor.

8. Magnetic levitation apparatus as claimed in claim 1, wherein the electromagnetic coil is wound in a circular, square, triangular or other irregular shape at the gap between radial extensions of the permanent magnet.